#translateTo: just shifts the timezone. So he's not adding hours to anything.
Why are you adding hours to a Date in the first place? I don't understand. Does that make it the next day or the same day 2 hours past the start of the day in whatever timezone you are in, intuitively? I vote: b. Bug. #= should compare calendar (gregorian, julian etc,), year, month, day or year, day # of year sebast...@flowingconcept.com wrote > On Feb 1, 2014, at 12:26 PM, Sven Van Caekenberghe < > sven@ > > wrote: > >> Sebastian, >> >> In my 3.0 image >> >> | today | >> today := Date today. >> (today translateTo: 2 hours) = today. >> >> => false >> > > Yeah, here too > >> But what are you trying to accomplish ? > > Detect the most simple equality in the most conventional way. A true when > two dates refers to the same date of the calendar > > >> Dates are a bit ambiguous: my Feb 1st and your Feb 1st, in one sense they >> are the same, refer to the same date, but in another sense, yours started >> at a different point in time, right ? So are they equal ? > > Well dates are the same, that’s the convention isn’t it? Localisation and > time is what's different there. > > If you want to have time involved in the equation the logic step given our > options is that you use DateAndTime > > So, again… > > Is this a bug or a feature? > > 1. Feature: our convention is injecting time in dates so we are injecting > an incompatibility with intuition in exchange of a surprising precision* > > 2. Bug: Date #= should not compare start > > *a precision that is redundant because DateAndTime also have the > #translateTo: feature > > >> Sven >> >> On 01 Feb 2014, at 14:01, Sebastian Sastre < > sebastian@ > > wrote: >> >>> Can somebody please clarify if this is a bug or feature? >>> >>> thanks >>> >>> >>> >>> >>> On Jan 31, 2014, at 9:03 PM, Sebastian Sastre < > SEBASTIAN@ > > wrote: >>> >>>> self assert: Date today = Date today. >>>> >>>> today := Date today translateTo: 2 hours. >>>> self assert: today = Date today >>>> >>>> Is this right? >>>> >>>> >>>> >>>> >>> >>> >> >> -- View this message in context: http://forum.world.st/Comparing-dates-tp4740789p4741029.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.
